Revolving fire-arm



(No Model.)

J. M. MARLIN.

REVOLVING FIRE ARM.

No. 367,821. Patented Aug. 9, 1887..

Nxbnwsm UNITED STATES PATENT OFFICE.

JOHN M. MARLIN OF NEW HAVEN, CONNECTICUT.

REVOLV|NG FIRE-ARM.

SPECIFICATION forming part of Letters Patent No. 367,821, dated August 9, 1887,

An lication filed May 12, 18H. Serial No. 237,927, [No model.)

. tion, partly in section, of a revolving fire-arm constructed according to my invention. Fig.

2 is an enlarged view of a portion of Fig. 1,.

showing details oft-he mechanism more plainly. Fig. 3 is a lower side view of the portion of the arm shown in Fig. 2 complete, or not seetioned.

A is the frame and handle of the arm, which is to be provided with lock and trigger mechanism in the usual manner; but these parts are omitted from the drawings, as they form no part of my present invention.

B is the barrel of the arm.

G is the revolving many-chambered cylinder. The frame A has aforwardly-extending part, a, beneath the cylinder, provided with one half of a. hinge in the shape of two leaves or plates, aa, Fig. 3. The other half of the hinge consists of two leaves or plates, I) b, connected to and projecting downwardly from the barrel B. A pin, 1), passes through these four plates a a b b transversely from side to side and forms the pivot of the hinge. This pin is in the form of a headed bolt, with a screw -thread cut on the end and a blind or covered nut screwed onto its thread to form a head on that end. These heads clamp or bind into the leaves or plates a a, so as to carry or turn the pin p with them at all times in the operation of the hinge, as hereinafter described. The pin 1; has a transverse slot, 19, cut in one side of it just opposite the space between the plates 11 b of the hinge. Into this space is fitted the lifter L, consisting of a nearly circular disk turning freely on the pin 1), which passes through its center. Thislil'ter is provided withafinger, Z, projecting upward into the space behind the stem of the shellextractor, as shown.

The cylinder Cis mounted and revolves upon a tubular pin, 0, projecting rearwardly from just beneath the barrel B, and is held in place by a shoulder formed in the usual manner to the lower side of the latch b", which is upon a rear end of the barrel-extension I). The latch b' is of the ordinary construction, turning upon the pivot p", and locks the barrel to the stud a on top of the frame, in the usual manner. The spider c',which pushes outthe empty shells from the cylinder chambers, is of the ordinary form, and is located in a recess in the rear end of the cylinder and attached to the .rear end of the stem 0 which extends forward through the bore of the cylinder pivot pin 0 to the finger l of the lifter. The stem 0 is provided with a shoulder, 0 against which the spiral spring 8 bears at one end, and at the other against the rear end of the chamber in the cylinder, as shown. This spring thus always keeps the spider c seated in its recess in the cylinder, and by its pressure against thelifter-finger Z, through stem 0, keeps the lifter, with relation to the barrel parts, in the position shown in Figs. 1 and 2 until the other parts come into operation, as hereinafter described.

In order to force out the extractor when desired, by means of the lifter L, the following described mechanism is employed: In the lower side of the lifter a chamber, e, is cut, of

the form shown in Figs. 1 and 2. In this cham-' sprung together and placed in the chamber, when its expansion gives a frictional bearing of the latch in turning, which keeps it in any given position until moved by external force. The opposite end of the latch has a nose, e, on one side, which bears against pin 12 as the latter turns with the frame of the arm, and a stud, e, on the other side, made with a square shoulder on its rear edge and a beveled shoulder, c, on its front edge. This stud e is so proportioned that when the nose e comes opposite the slot 1) in pinp thelatch e ICO may be swung upward and withdraw the stud entirely within the periphery of the lifter L, and when the other parts of pin 1) come against the nose 0 the stud will be projected out beyond this periphery. The slot is so ar ranged in pin as only to allow-the nose to enter it when the barrel is tipped upon the frame, as shown in Figs. 1 and 2. Thus when the barrel is closed and locked upon the frame by latch 6 the'stud part c of latch e will al-' ways he forced out beyond the periphery of the lifter L, as shown.

On the extreme forward end of frame-extension a is formed a square nose or shoulder,

a close to the periphery of lifter L, and on the lower side of the barrel is also attached a projecting nose or shoulder,-.b, close to the periphery of the lifter.

The operation of the mechanism is as follows: When the barrel is locked to the frame, the nose a of the frame. and the projecting stud e of the lifter are at some distance apart, as shown in Fig. 3. The unlatching of the barrel from the frame and tipping it down causes the nose a of the frame to travel along 7 the edge of thelifter Luntil it comes in contact with the square shoulder of stud e, asshown in Figs. 1 and 2; but as the pin 1; moves with the frame this movement has also brought the slot 42 in the pin opposite the nose 6 From this point the continued tipping down of the barrel revolves the lifter with the frame in the barrelpart of the hinge, and the finger Z of 1 the lifter forces the extractor and its stem 0 backward, throwing out the empty shells. When this has been done, the beveled part c of stud e comes against the barrel-nose b", which forces the stud etwithin the periphery of the lifter and releases the latter from the nose a of theframe. The springs thenthrows the extractor back into its normal position in the cylinder, carrying the lifter back to the position, in relation to the barrel, shown in Figs. 1 and 2. When the barrel is swung in the opposite direction and locked to the frame, 4 5

the revolution of thelifter on pin p forces.ont the stud c from the lifter, and it is ready to act as before.

, It will be observed that the cam shape of the pin 1) enables it to act on the latch e to force the stud end of thelatter out of thelifter; also, that the latch swinging on a pivot beyond orin front of the pivot-pin p of the frame, causes the pressure of the nose a of the frame to tend to hold the latch in engagement with the latter, and prevents its. slipping off prematurely.

VVhatIclaim as new and of my invention is- 1. The combination of the barrel B, the

frame provided with nose at and hinged to the barrel by pin p, the lifter L, provided with finger Z and revolving on said pin, wit-h the latter made cam-shaped within the lifter, the latch e, mounted in tbelifter, bearing against the cain shaped portion of said pin and pro- 6 latter made cam'shaped within the lifter, the

latch e, pivoted in the lifter on the opposite side of its pivot from nose a, bearing against .the cam-shaped portion of said pin, and provided with stud 6, arranged to be projected into and withdrawn out of the path of nose a 83 of the frame as the latter turns on its hinge, and the extractor actuated by finger Z during said movement, substantially as described.

O. F. DEMMER, J. F. LAwLoR 

